Britain
Guy Armoured Car MK I

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The Guy Armoured Car MK I was designed in 1938, manufactured by Guy Motors based on the existing 4 x 4 drive Truck and was in use from 1939 to 1945.

General Details Specifications Operational Date(s) 1939 - 1945 Quantity Produced 50 Weight 5.2 tonne Crew 3 M.G's small 1 M.G's large(>10mm) 1 Length 4.15 mtr Width 2.08 mtr Height 2.31 mtr Engine Details/Performance Max Road Speed 40 mph Max Cross Country Speed 20 mph Range Road 220 miles Range Cross Country 99 miles Fuel Type Petrol Fuel Capacity unknown Horse Power 53 hp Power/Weight 10 hp/tonne General Information The Guy Armoured Car MK I was designed in 1938, manufactured by Guy Motors based on the existing 4 x 4 drive Truck and was in use from 1939 to 1945. The vehicle was powered by Meadows '4ELA' petrol powerplant producing 53 HP which could drive the vehicle on roads at up to 40 mph with a range of about 220 miles before refuelling. Its cross country performance was good providing a max speed of about 20 mph and a range of about 99 miles. It was armed with 1 light machine gun , a Vickers Medium Machine Gun. and 1 large machine gun. consisting of Vickers Heavy Machine Gun and Vickers Heavy Machine Gun . This was the first British all welded armoured vehicle used by the British army. Armour Details Turret Front 14mm @ 20° (15mm) Side 14mm @ 20° (15mm) Rear 14mm @ 0° (14mm) Top 10mm @ 90° (10mm) Superstructure Front 14mm @ 40° (18mm) Side 14mm @ 15° (14mm) Rear 14mm @ 60° (28mm) Top 10mm @ 90° (10mm) Hull Front 14mm @ 40° (18mm) Side 14mm @ 15° (14mm) Rear 14mm @ 30° (16mm) Top 10mm @ 90° (10mm) Armour (x)mm @ (y)° (Effective mm @ 0°) Effective Armour - Maximum 28 mm - Minimum 10 mm

Weapon Details Vickers Medium Machine Gun (Machine Gun) History The Vickers medium machine gun was designed during World War I as a replacement for the Maxim gun from which its design was taken. It served throughout World War I and II as a fixed point machine gun used to suppress areas and act as a defensive point. Manufacturer Vickers Manufactured 1912 - 1968 Calibre 7.70mm Length L/93 Rate of Fire 450 rpm Number of Rounds  2000     Ammunition Details Name/Id Calibre Weight MVelocity Explosive Content Standard british .303 round - MkVIII (only used in Vickers Mg) (BALL Standard Small Arms) 7.70mm 0.01Kg 844M/Sec Range(Mtr) 100 200 400 800 1200 1600 2000 2400 Flight Time(Secs) 0.14 Penetration(mm@30°) 2 Penetration(mm@0°) 3 Hit Probability(%) 98 Weapon Details Vickers Heavy Machine Gun (Machine Gun) History The Vickers heavy machine gun was designed during World War I as a replacement for the Maxim gun from which its design was taken. This machine gun that fired .5 inch ammunition was used mostly in tanks. Manufacturer Vickers Manufactured 1912 - 1968 Calibre 12.70mm Length L/80 Rate of Fire 450 rpm Number of Rounds  1000     Ammunition Details Name/Id Calibre Weight MVelocity Explosive Content Vickers .5 inch bullet (AP Armor Piercing) 12.70mm 0.037Kg 770M/Sec Range(Mtr) 100 200 400 800 1200 1600 2000 2400 Flight Time(Secs) 0.14 0.31 Penetration(mm@30°) 6 4 Penetration(mm@0°) 7 5 Hit Probability(%) 98 98 .5 inch Armour Piercing W. Mark 1.z (AP Standard Small Arms) 12.70mm 0.037Kg 800M/Sec Range(Mtr) 100 200 400 800 1200 1600 2000 2400 Flight Time(Secs) 0.14 0.31 0.74 2.96 Penetration(mm@30°) 16 12 9 4 Penetration(mm@0°) 19 15 11 5 Hit Probability(%) 98 98 98 29

Hit probability is based on a static 2 x 2.4 metre panel at 0 degrees(vertical) at the range specified.

The data that has been used to create these records has come from Wikipedia, The Lone Sentry, The Bundes Archive and numerous books and websites that have provided the detailed information that has not been available anywhere else. The information we use to calculate the penetration tables, flight times and the hit probability comes from the Gun Calibre, the Shell Mass(Kg) and the muzzle velocity, plus range reductions to allow for gravity and wind resistance. This calculation originally came from a pre-war Krupp calculation which has been modified, and seems to fit the actual test results.

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